A nurse is caring for a patient who is receiving oxygen therapy via partial rebreather mask at 10 L/min. The nurse should instruct the patient to do which of the following to ensure effective oxygen delivery?
Keep the reservoir bag fully inflated at all times.
Breathe through the mouth and exhale through the nose.
Adjust the elastic strap to fit snugly around the face.
Remove the mask every 15 minutes to check the skin.
The Correct Answer is A
Keep the reservoir bag fully inflated at all times.
Choice A rationale:
In a partial rebreather mask, the reservoir bag should be kept fully inflated at all times to ensure the delivery of the highest possible oxygen concentration during inspiration. The bag collects oxygen during expiration, and the one-way valve prevents the exhaled gases from entering the bag. This way, the patient can inhale a mixture of oxygen from the reservoir and fresh oxygen flow.
Choice B rationale:
Breathing through the mouth and exhaling through the nose is not a necessary instruction for a patient using a partial rebreather mask. It doesn't directly impact the effectiveness of oxygen delivery.
Choice C rationale:
Adjusting the elastic strap to fit snugly around the face is not specific to ensuring effective oxygen delivery. It is a general guideline for mask fitting but doesn't directly affect oxygen administration.
Choice D rationale:
Removing the mask every 15 minutes to check the skin is not necessary and can disrupt the delivery of oxygen therapy. It's essential to maintain a consistent oxygen supply to the patient's lungs, and removing the mask frequently can compromise that. Checking the skin can be done periodically without removing the mask completely.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Switching to a simple face mask is not the appropriate intervention for nasal dryness and irritation. A simple face mask covers the nose and mouth, and it may not provide enough relief for nasal dryness as the oxygen flow is still directed towards the nose.
Choice B rationale:
Increasing the flow rate of oxygen will not directly improve humidity. Nasal dryness and irritation are often caused by the lack of moisture in the delivered oxygen. Increasing the flow rate may worsen the issue.
Choice C rationale:
Assessing the patient's nares for patency and skin integrity is the appropriate intervention. Nasal dryness and irritation can be caused by inadequate humidification of the oxygen. Checking the patency of the nares and the condition of the skin can help identify any issues that may be contributing to the discomfort.
Choice D rationale:
Reassuring the patient that nasal dryness is a normal side effect is not sufficient. While nasal dryness can be a common side effect of using a nasal cannula, it is essential to address the issue and provide appropriate interventions to alleviate the discomfort and prevent complications.
Correct Answer is C
Explanation
Choice A rationale:
Nasal cannula delivers oxygen through two small prongs placed in the patient's nostrils. While it is a commonly used and well-tolerated device, the FiO2 delivered can vary significantly depending on the patient's breathing pattern and respiratory rate. Thus, it does not provide the most precise and consistent FiO2.
Choice B rationale:
Simple face masks cover the nose and mouth and can provide higher FiO2 levels compared to nasal cannulas. However, the FiO2 delivered still depends on the patient's breathing pattern and the mask's fit, making it less precise and consistent than other options.
Choice C rationale:
Venturi masks are designed to deliver a specific and accurate FiO2, regardless of the patient's breathing pattern. These masks have adjustable ports to control the mix of air and oxygen, providing precise oxygen concentrations.
Choice D rationale:
Non-rebreather masks have one-way valves and a reservoir bag to deliver higher concentrations of oxygen. Although they can provide high FiO2 levels, the delivered concentration can vary based on the patient's breathing pattern and the mask's fit.
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